Best Inside Passage Trawler??

Discussion in 'Boat Design' started by DanRay, Sep 10, 2010.

    Joined: Oct 2002
    Posts: 4,519
    Likes: 111, Points: 63, Legacy Rep: 1009
    Location: Conn in summers , Ortona FL in winter , with big d

    FAST FRED Senior Member

    These engines in service with the US Navy have seen over 15,000 hours with no issues (head never off).

    I doubt even 5% of the USN time was at less than full throttle, which helps service life , as does 24/7 operation .

  2. RHough
    Joined: Nov 2005
    Posts: 1,792
    Likes: 61, Points: 0, Legacy Rep: 793
    Location: BC Summers / Nayarit Winters

    RHough Retro Dude

    I doubt that 50-80% load will result in the glazing problems seen on lightly used engines with mechanical injection systems. Fast warm-ups and accurate fuel systems have reduced (not eliminated) blow-by problems to a great extent. Idling in and out of a marina, then running in the 50-80% load range for a few hours is not going to damage the engines. Using the same engines to charge batteries for a refrigerator and never running them under load would certainly reduce their service life.

    I can't find any reports of glazing or reduced service life on QSB engines. These engines get short hopped, run lightly loaded and idled for prolonged periods in on-road applications and have a reputation as "million mile engines".

    This is getting pretty far off topic for this thread, but it does point out that the power required to plane compared to the power required for efficient (relatively) displacement cruising makes engine selection interesting for boats of this type.
  3. Easy Rider
    Joined: Oct 2009
    Posts: 920
    Likes: 46, Points: 0, Legacy Rep: 732
    Location: NW Washington State USA

    Easy Rider Senior Member

    Dan Ray asked about "trawlers" not megayachts, high speed cruisers or passagemakers. I think what he had in mind was should I buy a GB or a Nordic, a CHB or a Marine Trader or a Monk ect ect. And why are you guys putting such great emphasis on fuel consumption? There's lots of places to buy fuel in SE so range is not an issue. Anyone who can afford these boats can afford (see above) can afford their fuel burn so when is someone going to tell Dan Ray what IP trawler to choose? We've gone (how many pages now) and I don't recall anyone even presenting the normal requirements for such a vessel.

    Easy Rider
  4. RHough
    Joined: Nov 2005
    Posts: 1,792
    Likes: 61, Points: 0, Legacy Rep: 793
    Location: BC Summers / Nayarit Winters

    RHough Retro Dude

    I think Dan has seen some of the limitations of trawlers and is looking at other types. If that was not the case I would not have posted in the thread. Strangely enough, fuel consumption is one of the topics that almost always comes up in discussions about power boats and is often used as a positive for displacement trawlers. These discussions hinge around speed, range and fuel consumption.
  5. Man Overboard
    Joined: Oct 2006
    Posts: 246
    Likes: 13, Points: 18, Legacy Rep: 129
    Location: Wisconsin

    Man Overboard Tom Fugate

    Apex, thanks for the link to your post about CPP, lots of info and links there to explore.

  6. apex1

    apex1 Guest

    Welcome Tom.
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.